Fixed Live Wallpaper crash on Android 2.2

Maybe not only on 2.2, but i have 2 "engines" on HTC Hero with 2.2.1 and have a crash because view is not initialized, because can't be initialized if have more than 1 engine (see line 331).
So, i think it's just typo.
Fixed when root directory is blank.
Added premultipliedAlpha setting.
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'upstream/master'
forceVBO in Mesh

At least one recent commit https://github.com/libgdx/libgdx/commit/7020231ca8b1e14995d398603de525581e3d1282 has completely disabled VBO support in the SpriteBatch class for not so clear reasons. 
My project uses GL20 for now only and I would like to use/test VBOs, so at least there's a way to bring back VBOs in spritebatch by using the forceVBO flag.
If someone could clarify why SpriteBatch was changed I would appreciate as well.
Merge pull request #344 from semtiko/patch-1

Fixed Live Wallpaper crash on Android 2.2
Merge pull request #346 from frustaci/patch-1

Fixed forceVBO in Mesh
1381, fixed Json round trip of longs.
Merge remote-tracking branch 'origin/master'
JSOn changes
remove the use of deprecated #mul()
Merge pull request #351 from seroperson/master

remove the use of deprecated #mul()
Add TextureFilter to parameters for TmxMapLoader.
Fixed JSON parsing that I broke...
Merge remote-tracking branch 'origin/master'
Use update(false) since we call processMessages().
Merge remote-tracking branch 'upstream/master'